PRE2019 3 Group4 Usability-Tests

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Contents

Usability Tests

Task 1: Device placement

  • Participant is required to put the device at a stable/reachable surface and in front of them (in the correct way with the buttons at the top and the charging input at the right hand side)
  • The participant is able to do this, this task is passed.

Task 2: Charge the device

  • Participant is required to charge the device by plugging a cable in the device as well as in the power output.
  • If a sound is produced by the device (which means that it is charging), this task is passed.

Task 3: Turn the device on

  • Participant is required to turn on the device by pressing the on/off button.
  • If a sound is produced by the device (which means that it is on), this task is passed.

Task 4: Change modus at novice level

  • Participant is required to put the modus at the novice level.
  • If the participant uses the arrow shaped buttons properly (to change buttons), then a sound will be generated which indicates the current modus the participant has activated. If the participant has activated the correct modus, then this task is passed

Task 5: Typing a letter

  • Participant is required to type one letter by using the device. This task measures two things:
    • If a participant is able to recognize the six-point system of the Braille cells by using the left Braille cell on the device. This will be measured by response time (time to recognize)
    • If the participant entered the correct letter (error rate) by using the right Braille cell of the device properly.
  • If a letter is entered, then this task is passed.

Task 6: Using the reset button

  • Participant is required to type another letter, however is he asked to make a mistake on purpose. At this point, the participant has to use the reset button to correct his mistake.
  • If the participant succeeds, then this task is passed.

Task 7: Turn the device off

  • Participant is required to turn off the device by pressing the on/off button again.
  • If the participant is capable to turn off the device, then this task is passed.
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